Based on Slides 9-10, why do frogs need to keep their skin moist for proper respiration, and how does this affect their habitat preferences?

Question

a
To facilitate cutaneous respiration, which requires moist skin for oxygen and carbon dioxide exchange, making them prefer watery environments.
b
To enhance their ability to yawn and take in more oxygen, making them prefer high altitudes.
c
To allow them to use their diaphragm muscles more effectively, leading them to dry areas.

Answer 1

The correct answer is:

a To facilitate cutaneous respiration, which requires moist skin for oxygen and carbon dioxide exchange, making them prefer watery environments.

Frogs breathe primarily through their skin (cutaneous respiration), and for this process to be effective, their skin must remain moist to allow the exchange of gases. This biological necessity influences their preference for habitats that have abundant moisture, such as near water sources.